It's easy to think of a critic as an arsehole when they're mean and harsh, but sometimes there's a good point myred in all that negativity. Harsh criticism can cause you to sometimes miss the point, but if you consult your inner troll and criticise yourself you can address those concerns ahead of time.
Photo by Christine
The obvious advice here is to second guess yourself, but you don't want to just nitpick every choice you make. If you second guess all your choices, your work will suffer because you'll prohibit yourself from taking any chances. Instead, you're better off pretending you're a huge asshole and say awful, irritable things about your own work. When you do this, you can't take the criticism too seriously because it's especially ridiculous when it's coming from you. Doing this gives you a chance to laugh about the stupid things people might say, but it also allows you to look at those comments without getting angry.
Sometimes you'll get feedback from mean people who actually have a point that you'll be too upset to hear. If you make that point to yourself, and do it in that same horrible, sensational manner, it can help you improve your work and potentially save you some heartache down the road.